If a two digit positive number is multiplied by its unit digit, then the product is 189 and if the tens digit is twice of the unit digit, then find the unit digit.

If a two digit positive number is multiplied by its unit digit, then the product is 189 and if the tens' digit is twice of the unit digit, then calcutate the unit digit.

The two digited fermat number is

The tens' digit of a two digit number is less by 3 than the unit digit. If the product of the two digits are subracted from the number, the result is 15. Find the unit digit of the number.

The tenth digit of two digit number is less by 3 than the unit digit. If the product of the two digits are subtracted from the number the result is 15. Find the unit digit of a number.

If a two digits' number is divided by the sum of digits, the quotient is 6 and the residue is 3. Again, if two digits are interchanged, then the new number thus obtained, is divided by the sum of the digits, the quotient is 4 and the residue is 9. Find the number.

Ajay has written a two digit number in his copy of which the tens digit is less by 4 tha the unit digit. If the product of the two digit is subrated from the number , the result is equal to the square of the difference of two digits of that number. Write the number which Ajay can write in his copy.

The tens' digit of a two digits number is twice of its unit digit. If 40 is subtracted from the number then the two digits of the new number becomes equal. Find the number.

The unit digit of a two digit number exceeds the tens digit by 6 and the product of two digits is less by 12 then the number. Calculate the possible unit digit of two digit number.

The unit digit of a two digit number exceeds its tens' digit by 6 and the product of two digits is less by 12 from the number.Hence find the required quadratic equation.